單項(xiàng)選擇題Proper dispersion of fuel in a diesel engine cylinder is dependent upon the ()

A.injection pressure
B.shape of combustion space
C.turbulence in combustion space
D.all of the above


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2.單項(xiàng)選擇題Exhaust pyrometer readings provide an indication of the ()

A.effectiveness of water-cooled exhaust elbows
B.distribution of the load between engine cylinders
C.amount of fuel penetration into the engine cylinders
D.indicated horsepower of the engine cylinders

3.單項(xiàng)選擇題Fuel oil discharged to the diesel engine cylinder is atomized at the ()

A.turbocharger
B.injection nozzle tip
C.carburetor
D.fuel oil pump

4.單項(xiàng)選擇題Cavitation erosion in the cooling water system of a diesel engine usually occurs at the pump impeller, and on the waterside of the ()

A.fuel nozzle holders
B.exhaust value guides
C.engine cylinder liners
D.low temperature and a low viscosity

5.單項(xiàng)選擇題Which of the following factors tends to increase scale formation on the saltwater side of a heat exchanger used in a diesel engine cooling water system?()

A.Baffle plates that have been bent during prior removal
B.Leaks in the cooler tube nest
C.Operating the engine while maintaining a high sea water outlet temperature
D.A punctured sea water strainer supplying cooling water to the heat exchanger